Purchase eagerly and quickly (4,2)
I believe the answer is:
snap up
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">purchase eagerly and quickly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for snap up that I've seen before include "Quickly accept" , "Snatch" , "Purchase eagerly and quickly" , "Grab eagerly and quickly" , "Buy (a rarity) quickly" .)